Irvine Lake blows!!!! There's a lake in Mission Viejo and I think Aliso Viejo. There are some private lakes that are catch and release only. I live in Lake Forest. I actually have been to redondo pier for pier fishing. Not bad there if you stay late or really early.
What do you want to catch? You might try
here first and just check out different sites like this. You might be able to find some info from
OC Now but I haven't checked yet.
I plan on going shore fishing. Bigger game and better fights. CYou can catch some sea bass, halibut, barracuda.
Good luck.